i downloaded and installed new SST (v6.6.4.10) - and it didn't solved the problem for me - the RSHIFT... are already assignable , testing utility which is part of the SST Profiler shows that combinations with them works now.
BUT :
When i tried the joystick output with assigning it (profiled - SHIFT+P , RSHIFT+P ...) to some commands in controls (DCS - options) then everything works well and the output from SST works flawlessly as another keybord - binding profiled keystrokes, but when i try to toggle i.e. AutoPitch (LSHIFT+P) in the game it ignores LSHIFT and acts only as P (cannon track/bore). (i have it profiled as <Mode1+Pinkie>+<HAT2_left> but that doesn't matter).
I'll try complete wipe of drivers/soft and clean install of them, maybe clean install of OS. what else can i do ... :(